Wallas and CO potential

dogon dory · Posted: Mon Jun 27, 2005 11:17 am Post subject: Wallas and CO potential

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stevej · Posted: Mon Jun 27, 2005 12:08 pm Post subject:

Dan I have hundreds of hours on my Wallas and without exception I will smell kerosene on startup, shutdown or when the thing gets into a funky mode from running at low settings for an extended period of time. My thinking is that it has to do with efficiency of burn. Have noticed that when starting up/shutting down it tends to belch a bit of white smoke with a heavy kero scent and even on windless days the smell gets into the cabin but after a few minutes goes away. I tend to run the thing at the start setting or higher and stay away from low settings except for short periods.

stevej

TyBoo · Posted: Mon Jun 27, 2005 11:49 pm Post subject:

Dan -

The next time you experience the problem, try leaving one of the cabinet doors under the stove wide open. It is possible that the blower lid fan was robbing the combustion fan of air. Do you have the small slot cut in the galley face in front of the stove? If not, then the above would be even more likely. I do believe the small FD fan also provides the air flow to carry the exhaust outside.

Insufficient air flow across the underside of the stove might also account for the extended shut down cycle, the length of which is regulated by a temp sensor.

Now then, temper all I say about these Wallas jobs with the realization that I am far from an expert, seasoned or otherwise. Mine only works right about 1/3 of the time. I am certain of this, though: be careful when you stick your nose down near the heater top.

dogon dory · Posted: Tue Jun 28, 2005 12:46 am Post subject:

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KenMcC · Posted: Tue Jun 28, 2005 1:11 am Post subject:

One thing that might be worth considering if you run your Wallas a lot while underway, would be to put a clamshell vent cover over the vent. I've run my Wallas while on-shore with some pretty strong winds from starboard, with no problems, but if you think that could be the cause, that might be a solution.

Ken

Byrdman · Posted: Tue Jun 28, 2005 1:40 am Post subject:

Had to grin a bit about the surface being hot...still. Yep, been there too Mike. Also, not sure of your insect/wasp/dirt dobber issue in your area, but that neat little hole on the outside of your boat makes for a great insect condo... I found spider set up in mine after being away from the boat a few weeks... Yep, they like C-dory comfort too.

katkt · Posted: Tue Jun 28, 2005 12:19 pm Post subject:

Any chance that you might be experiencing a stationwagon effect while under way?? Forward motion creating a lower pressure in the pilot house and drawing the spent fumes back into the pilot house from outside via cracks around doors and windows etc.???

dogon dory · Posted: Wed Jun 29, 2005 12:16 am Post subject:

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Larry H · Posted: Wed Jun 29, 2005 12:36 am Post subject:

I always run with the forward hatch open on the first slot(about 3/4 in) to prevent co poisoning from the motor. This forces a draft into the front of boat to ensure a fresh air flow.

katkt · Posted: Wed Jun 29, 2005 8:33 am Post subject:

dogon dory · Posted: Wed Jul 06, 2005 5:55 pm Post subject:

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dogon dory · Posted: Wed May 24, 2006 12:33 am Post subject:

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Byrdman · Posted: Wed May 24, 2006 12:59 pm Post subject:

Hey Brother Dan...

Another little item that effects the exhaust fan that happend with mine.... is: Do not have parts manual, nor do I know the names of the parts...but those with a wallas to look at should be able to follow this...

The little fan blades that turn inside the little toilet paper size tube, looking from the floor of the boat up into the bottom of the unit (yes..it is uncomfortable), .... OK.. you see them.

What happened on mine was that little "push washer nut" thing "let go" a little, causing the little fan blade gizmo to "slide down the shaft"..... which, changed the amount of air flow drastically rendering my unit un-useable due to lack of air flow.

Talking with the go-roo at the factory C-Dory gets them from, Karl I think his name is, (now he has an accent), just told me for a quick fix, simply push the blade mechanism back up the shaft, super glue it in place, being careful of not pushing the thing up too high.... Now, too high was not definable at the time, and wear goggles when you attempt to super glue upside down... I tried it. Yours may not have slid down .....yet... or as much as mine did, but be aware of this if you notice you needing to run it just a little higher....then just a little higher to keep the exhaust outside rather than inside. Sort of a slippery slop which is what happend with mine.

End result, just like you are saying Dan..... I had to avoid the lower settings, the unit made a bit more noise due to my "unbalanced" upside down super glue attempt, making the shaft a bit out of balanced. Sort of like a drive shaft on a car being out of balance.

My suggestion to Karl, particuarly fpr what we pay for these items, is to loose the push washer lock nut, thread the shaft, and use real lock nuts that are not as pron to slippage due to bouncing and vibrations. There is a lot of vibrations on the boats, particuarly when on the trailer going down the roads.